Used in the synthesis of azo dyes and hair dye formulations due to its ability to form colored compounds through diazotization and coupling reactions. It acts as an intermediate in the production of certain pharmaceuticals and agrochemicals, particularly in creating molecules with chlorinated aromatic rings. Also employed in the development of photographic chemicals and some antioxidant systems. Its reactivity with electrophiles and amines makes it valuable in organic synthesis for building more complex structures.